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UTC34119

LOW POWER AUDIO AMPLIFIER

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UTC34119

LINEAR INTEGRATED CIRCUIT

LOW POWER AUDIO AMPLIFIER

DESCRIPTION

The UTC34119 is a low power audio amplifier integrated

circuit intended (primarily) for the telephone applications,

such as in speakerphones. It provides differential speaker

outputs to maximize output swing at low supply voltages.

Coupling Capacitor to the speaker are not required. Open

loop gain is 80dB, and the closed loop gain is set with two

external resistors. A chips Disable pin permits powering

down and/or muting the input signal.

FEATURES

*Wide operating supply voltage: Vcc=2~16V

*Low quiescent supply current(Icc=2.7mA,typical)

*Medium output power

Po=250mW at Vcc=6V,RL=32ohm ,Thd=10%

*Load Impedance range(8 ohms to 100 ohm)

*Low distortion

*Mute function(Icc=65µA, typical)

*Minimum number of external parts required.

DIP-8

BLOCK DIAGRAM

Inverting

Input

4

Non-

Inverting 3

Input

Amp 1

R

R

Vcc

6

Bias

2

Ripplie

Rejection

Amp 2

7

GND

5 Output 1

8 Output 2

1 MUTE

YOUW ANG ELECTRONICS CO.LTD

1

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